Stefanos Tsitsipas of Greece tosses the ball to serve to Kevin Anderson of South Africa during Rogers Cup semifinal tennis tournament action in Toronto on Saturday, Aug. 11, 2018 in Montreal. (Frank Gunn/The Canadian Press via AP) less

Stefanos Tsitsipas of Greece tosses the ball to serve to Kevin Anderson of South Africa during Rogers Cup semifinal tennis tournament action in Toronto on Saturday, Aug. 11, 2018 in Montreal. (Frank Gunn/The ... more

Photo: Frank Gunn, AP

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Stefanos Tsitsipas, of Greece, serves on his way to defeating Kevin Anderson, of South Africa, during the Rogers Cup men's tennis tournament in Toronto, Saturday, Aug. 11, 2018. (Frank Gunn/The Canadian Press via AP) less

Stefanos Tsitsipas, of Greece, serves on his way to defeating Kevin Anderson, of South Africa, during the Rogers Cup men's tennis tournament in Toronto, Saturday, Aug. 11, 2018. (Frank Gunn/The Canadian Press ... more

Photo: Frank Gunn, AP

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Stefanos Tsitsipas of Greece hits a backhand to Kevin Anderson of South Africa during Rogers Cup semifinal tennis tournament action in Toronto on Saturday, Aug. 11, 2018 in Montreal. (Frank Gunn/The Canadian Press via AP) less

Stefanos Tsitsipas of Greece hits a backhand to Kevin Anderson of South Africa during Rogers Cup semifinal tennis tournament action in Toronto on Saturday, Aug. 11, 2018 in Montreal. (Frank Gunn/The Canadian ... more

Kevin Anderson of South Africa hits a forehand to Stefanos Tsitsipas of Greece during Rogers Cup semifinal tennis tournament action in Toronto on Saturday, Aug. 11, 2018 in Montreal. (Frank Gunn/The Canadian Press via AP) less

Kevin Anderson of South Africa hits a forehand to Stefanos Tsitsipas of Greece during Rogers Cup semifinal tennis tournament action in Toronto on Saturday, Aug. 11, 2018 in Montreal. (Frank Gunn/The Canadian ... more

TORONTO (AP) — Greek teen Stefanos Tsitsipas became the youngest player to beat four straight top-10 players in an event since the ATP World Tour was established in 1990, outlasting Kevin Anderson 6-7 (4), 6-4, 7-6 (7) on Saturday to reach the Rogers Cup final.

Tsitsipas will celebrate his 20th birthday Sunday by facing top-ranked Rafael Nadal in a bid for his first tour title.

"Playing in a Masters 1000 final is the best thing that can happen on your birthday," Tsitsipas said. "I cannot believe it."

"I'm capable of doing anything on the court and beating any opponent," Tsitsipas said.

Tsitsipas fired an ace for an 8-7 lead and converted his third match point when Anderson's return sailed long. The South African had a match point of his own at 7-6, but Tsitsipas came through with a brilliant backhand crosscourt winner to pull even.

"I'm secure and I'm aggressive at the same time," Tsitsipas said. "It feels like I'm never losing it. I'm always there. It doesn't matter what the score is."

The 32-year-old Anderson reached the Wimbledon final last month. He also lost his only other match against Tsitsipas, falling this year on clay in Portugal.

"I think the biggest thing I was impressed with was definitely his mentality," Anderson said about Tsitsipas. "He stayed pretty solid throughout the match. Today, he definitely deserved to win."

Tsitsipas is attempting to become the first player since Albert Portas at Hamburg in 2001 to win his first ATP World Tour title at a Masters 1000 event. Ranked 27th, Tsitsipas will jump to 12th with a victory Sunday and to 15th with a loss when the new rankings are released Monday.